Wikipedia wrote:In criminal law, theft (also known as stealing or filching) is the illegal taking of another person's property without that person's freely-given consent. As a term, it is used as shorthand for all major crimes against property, encompassing offences such as burglary, embezzlement, larceny, looting, robbery, mugging, trespassing, shoplifting, intrusion, fraud (theft by deception) and sometimes criminal conversion. In some jurisdictions, theft is considered to be synonymous with larceny; in others, theft has replaced larceny.Someone who carries out an act of or makes a career of theft is known as a thief.

Wiktionary wrote:illegal (comparative more illegal, superlative most illegal)(law) Contrary to or forbidden by law, especially criminal law.Not permitted by rulesMoving a pawn backward is an illegal move in chess.(stamp-collecting, of an issue printed for collectors) Totally fictitious, and often issued on behalf of a non-existent territory or country.(of an immigrant) Being an illegal immigrant; residing in a country illegally.

Cell mate conversationsBig Jim: I'm in for mansalughter how about you tiny tim?Tiny Tim: I'm in for arson and three counts of rape, how about you Crazy Jack?Crazy Jack: Kidnapping, rape and murder, but I'm sure Nutty Ned is in here for something worse, right?Nutty Ned: I moved a pawn backwards in chess.